| 摘要 |
which can be converted to fungicidally active 2-alkylamino-4-hydroxy-5,6-dialkylpyrimidines, their salts and ethers, have formula: (where R5 and R6 are 1-8C alkyl groups) and are prepared by reacting urea with a beta-ketoester R6CO-C(R5)H-COOR1 (where R1 is 1-8C alkyl) in presence of a base pref. an alkali metal hydroxide or alkoxide. |
